US20100185157A1 - Plunger Assembly for Syringe - Google Patents
Plunger Assembly for Syringe Download PDFInfo
- Publication number
- US20100185157A1 US20100185157A1 US12/668,812 US66881208A US2010185157A1 US 20100185157 A1 US20100185157 A1 US 20100185157A1 US 66881208 A US66881208 A US 66881208A US 2010185157 A1 US2010185157 A1 US 2010185157A1
- Authority
- US
- United States
- Prior art keywords
- piston
- syringe
- depression
- plunger rod
- male screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M5/31515—Connection of piston with piston rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
Definitions
- the present invention relates to a plunger assembly for a syringe for pushing out a Medicinal solution retained in a syringe barrel.
- a plunger assembly for a syringe is composed of a piston which is slidably fitted into a syringe barrel and a plunger rod which is screwed into an axis apart of the piston.
- the piston and the plunger rod are generally assembled in a fitting manner of a male screw and a female screw.
- a piston which slides in a syringe barrel is formed by a rubber as a main component.
- silicone oil has been applied to the surface of the piston that is provided in some cases.
- the present patent applicant and so on has provided a laminate piston in which a tetrafluoroethylene resin film, an ethylene tetrafluoroethylene resin film, or a high molecular weight polyethylene resin film is laminated on the surface of a rubber piston.
- an actual field site of a medical treatment involves an operation of not only pushing out a piston but also pulling out a piston, more specifically an operation of confirming an introduction of a needle and filling with a medicinal solution in a syringe barrel by making a piston together with a plunger rod move in reverse to the base end side of a syringe barrel.
- a syringe has a small capacity in order to lessen a burden of the patient, and a diameter of a syringe barrel has a tendency to be decreased.
- a diameter of a piston is required to be extremely decreased.
- a depression a hole for a fitting
- the present invention was made in consideration of such conditions, and an object of the present invention is to provide a plunger assembly for a syringe in which a force to pushing a piston is hardly applied in the case in which a piston and a plunger rod are engaged with each other, a piston is engaged with a plunger rod in a slidable manner after an engagement, and a piston can be held at the leading end of a plunger rod without fault and the piston together with the plunger rod can be pulled out in an integrated manner even in the case in which a pulling out operation is carried out in order to fill with a medicinal solution in a syringe barrel by making the piston together with the plunger rod move in reverse to the base end side of the syringe barrel for an extremely thin syringe having a small capacity in particular.
- the plunger assembly for a syringe in accordance with the present invention is characterized in that the piston is a laminate piston in which a resin film is laminated on the surface thereof.
- the surface of the piston in the present specification includes not only a peripheral surface of the piston, that is, a surface that comes into contact with a chemical solution, and a sliding surface of the piston, but also a surface of the depression.
- the above laminate piston represents pistons related to three modes of a piston in which only a peripheral surface is laminated, a piston in which only a surface of the depression is laminated, and a piston in which both the peripheral surface and the depression are laminated.
- the plunger rod is fitted to the piston in a state that the male screw formed at an end part of the plunger rod comes into contact with an inner wall of the depression of the piston in a sliding manner or that the male screw is screwed into the depression, thereby preventing the piston from being dropped out of the plunger rod.
- FIG. 1 is a cross-sectional view showing a fitting state of a syringe barrel that configures a syringe in accordance with an embodiment of the present invention and a plunger assembly for a syringe in accordance with the present invention.
- FIG. 2 is a half cross-sectional view showing a laminate piston of the plunger assembly for a syringe shown in FIG. 1 .
- FIG. 3 is an elevation view showing a plunger rod of the plunger assembly for a syringe shown in FIG. 1 .
- FIG. 4 is an elevation view showing a plunger assembly for a syringe in the case in which a plunger rod is attached to the laminate piston shown in FIG. 2 .
- FIG. 5 is an elevation view showing another example of a plunger rod shown in FIG. 3 .
- FIG. 1 is a cross-sectional view showing a plunger assembly for a syringe in accordance with an embodiment of the present invention.
- a plunger assembly 10 for a syringe in accordance with an embodiment of the present invention is composed of a piston 4 that is inserted into a syringe barrel 2 in a slidable manner and a plunger rod 6 that is attached into the depression of the piston 4 .
- a resin film is laminated to a peripheral surface of a rubber piston, and a depression 8 is formed in an axial direction on the base end side.
- an outer diameter of the piston 4 is in the range of 3.0 to 5.5 mm
- an overall length is in the range of 4.0 to 7.0 mm
- an inner diameter of the depression 8 is in the range of 1.0 to 4.0 mm.
- a male screw 12 that is inserted into the depression 8 of the piston 4 is formed at the leading end of a rod body 6 a.
- a pressing flange 14 is formed on the rear end side the plunger rod 6 .
- the male screw 12 is composed of a thread crest 12 a and a thread gullet 12 b in a spiral shape, and a diameter of the thread crest 12 a is larger than an inner diameter of the depression 8 of the piston 4 . Consequently, by pressing the male screw 12 into the depression 8 of the piston 4 , the male screw 12 of the plunger rod 6 is cut into the depression 8 of the piston 4 that is relatively soft.
- the male screw 12 of the plunger rod 6 shown in FIG. 3 is disposed opposite to the base end side of the piston 4 shown in FIG. 2 at first, and the male screw 12 of the plunger rod 6 is screwed into the depression 8 of the piston 4 while a slight force is applied.
- the thread crest 12 a extending in a screw pattern for the male screw 12 is fitted to the inner wall of the depression 8 and is cut into the inner wall, whereby the piston 4 can be engaged with the plunger rod 6 without fault.
- the relationship between an inner diameter of the depression 8 of the piston 4 and a diameter of the thread crest 12 a depends on an inner diameter of the syringe barrel 2 and a shape and a material of the piston 4 . It is preferable that a diameter of the thread crest 12 a of the male screw 12 is larger than an inner diameter of the depression 8 of the piston 4 by the range of 10 to 25%. In the case in which a degree is 10% or less, the piston 4 is easily dropped out of the plunger rod 6 undesirably. On the other hand, in the case in which a degree is 25% or larger, a sliding resistance of the piston 4 is increased undesirably.
- the piston 4 is easily dropped out of the plunger rod 6 on pulling out.
- a surface of the depression 8 is hardened due to a lamination of a film, the piston 4 is hard to be dropped out. Consequently, in the case in which a film is laminated on the depression 8 and a length of the depression 8 is larger, the piston 4 is hard to be dropped out in comparison with the case in which a film is not laminated on the depression 8 .
- a length of the depression 8 is 70% or less of a length of the piston 4 .
- a sealing performance of the piston 4 is deteriorated, and a molding performance of the male screw 12 of the plunger rod 6 is deteriorated disadvantageously.
- the plunger assembly 10 for a syringe in accordance with an embodiment of the present invention, it is unnecessary that a female screw is formed in the depression 8 of the piston 4 . Consequently, the present invention can be applied to an extra thin piston 4 .
- the present invention can be applied to an extra thin syringe piston that has a small capacity of 5 ml or less and that is hard to have a substantive female screw inside the piston, for instance a syringe piston that has a small capacity of 0.5 ml or less and that has a syringe barrel inner diameter of 5 mm or less.
- the piston 4 can be engaged with the plunger rod 6 without fault by the male screw 12 of the plunger rod 6 . Consequently, in the case in which an operation of pulling out the piston 4 is carried out, the piston 4 can be prevented from being dropped out of the plunger rod 6 .
- a plastic is used in general, and there can be mentioned for instance a cyclic olefin series resin, a cyclic olefin ethylene copolymer, a polyethylene terephthalate series resin, a polystyrene resin, and a polyethylene terephthalate resin.
- a cyclic olefin series resin and a cyclic olefin ethylene copolymer that have a high transparency and an excellent heat resistance property and that have no chemical interaction with a pharmacological product (for instance, those used for a hygiene container disclosed in Patent Publication No. 2914826).
- any one of a rubber material and an elastomer material, which have been used for a production of a piston, can be used, and the material is not restricted in particular.
- a butyl series rubber such as a butyl rubber, a chlorinated butyl rubber, a brominated butyl rubber, and a divinylbenzene copolymerization butyl rubber
- a conjugated diene series rubber such as a polyisoprene rubber, (high to low cis 1, 4 bonding), a polyisobutylene rubber, a polybutadiene rubber (high to low cis 1, 4 bonding), and a styrene-butadiene copolymerization rubber
- EPDM ethylene-propylene-diene terpolymerization rubber
- an elastomer an olefin series copolymer rubber (elastomer) and/or olefin series plastics can be mentioned for instance.
- the piston 4 in accordance with the present invention is produced by using an elastomer or a crosslinking rubber composition (compound) that is obtained by kneading the above rubber material and a compounding agent such as a crosslinking agent, a filler and/or a reinforcing agent, a coloring agent, and an age resister as needed and by a publicly known molding method such as a compression molding and an injection molding for a piston.
- a compounding agent to be used is not restricted in particular, and can be a compounding agent that has been used in producing a rubber stopper or a piston for a pharmacological product or medical treatment tools.
- the piston 4 for a syringe in accordance with the present invention is a laminate piston, a surface that comes into contact with a chemical solution or a sliding surface of the piston is laminated by a plastic film made of a material such as a fluorine resin, ultrahigh molecular weight polyethylene, polyethylene, polypropylene, polyester, and nylon.
- a fluorine resin such as polyethylene, polypropylene, polyester, and nylon.
- the periphery of the piston is laminated or coated by a fluorine resin film.
- a fluorine resin in accordance with the present invention there can be selected for instance PTFE (polytetrafluoroethylene), ETFE (ethylene-tetrafluoroethylene copolymer), PFE (perfluoro alkoxyalkane), PFA (perfluoro ethylene propene copolymer), PVDF (polyvinylidene fluoride), and an alloy of those and other polymer as needed. From a point of view of a sliding property and a low reactivity, PTFE (polytetrafluoroethylene) is preferable in particular.
- the depression 8 of the piston 4 for a syringe in accordance with the present invention is laminated or coated with a film as a point of view of a screwing property and an engaging property.
- a material of a film that is laminated or coated on the depression 8 there can be used for instance a fluorine resin, ultrahigh molecular weight polyethylene, polyethylene, polypropylene, polyester, and nylon similarly to other parts of the piston 4 as described above. From a point of view of a suitable sliding property, a low reactivity, and a cost, ultrahigh molecular weight polyethylene is preferable in particular.
- a material of a film that is laminated or coated on the depression 8 and a material of a film that is laminated or coated on other parts of the piston 4 can be the same or can be different from each other.
- a syringe in which a plunger assembly for a syringe in accordance with the present invention is used includes a syringe having two rooms as disclosed in Japanese Patent Application Laid-Open Publication No. 9-308688 in addition to a normal syringe having one room.
- the thread crest 12 a in a spiral shape is formed on the male screw 12 of the plunger rod 6 .
- the male screw 12 continues in a spiral shape, and a plurality of ring bodies can be simply disposed in a protruding manner at a predetermined interval as shown in FIG. 5 .
- a male screw in accordance with the present invention includes a protruding body other than a so-called thread crest that continues in a spiral shape.
- the screw shape as shown in FIG. 3 is preferable in particular from a point of view of a friction and damage to an inner wall of the depression of the piston.
- a plunger assembly for a syringe in which a piston having a small diameter is used is shown in the above embodiment. However, this does not prevent the present invention from being applied to a plunger assembly for a syringe in which a piston having a large diameter is used.
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-184327 | 2007-07-13 | ||
JP2007184327 | 2007-07-13 | ||
PCT/JP2008/061749 WO2009011214A1 (ja) | 2007-07-13 | 2008-06-27 | 注射器用プランジャアセンブリ |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100185157A1 true US20100185157A1 (en) | 2010-07-22 |
Family
ID=40259552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/668,812 Abandoned US20100185157A1 (en) | 2007-07-13 | 2008-06-27 | Plunger Assembly for Syringe |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100185157A1 (ja) |
EP (1) | EP2174681A4 (ja) |
JP (1) | JPWO2009011214A1 (ja) |
WO (1) | WO2009011214A1 (ja) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD668760S1 (en) * | 2011-06-17 | 2012-10-09 | Daikyo Seiko, Ltd. | Syringe barrel |
US9272095B2 (en) | 2011-04-01 | 2016-03-01 | Sio2 Medical Products, Inc. | Vessels, contact surfaces, and coating and inspection apparatus and methods |
US9458536B2 (en) | 2009-07-02 | 2016-10-04 | Sio2 Medical Products, Inc. | PECVD coating methods for capped syringes, cartridges and other articles |
US9554968B2 (en) | 2013-03-11 | 2017-01-31 | Sio2 Medical Products, Inc. | Trilayer coated pharmaceutical packaging |
US9572526B2 (en) | 2009-05-13 | 2017-02-21 | Sio2 Medical Products, Inc. | Apparatus and method for transporting a vessel to and from a PECVD processing station |
US9664626B2 (en) | 2012-11-01 | 2017-05-30 | Sio2 Medical Products, Inc. | Coating inspection method |
US9662450B2 (en) | 2013-03-01 | 2017-05-30 | Sio2 Medical Products, Inc. | Plasma or CVD pre-treatment for lubricated pharmaceutical package, coating process and apparatus |
US9764093B2 (en) | 2012-11-30 | 2017-09-19 | Sio2 Medical Products, Inc. | Controlling the uniformity of PECVD deposition |
US9863042B2 (en) | 2013-03-15 | 2018-01-09 | Sio2 Medical Products, Inc. | PECVD lubricity vessel coating, coating process and apparatus providing different power levels in two phases |
US9878101B2 (en) | 2010-11-12 | 2018-01-30 | Sio2 Medical Products, Inc. | Cyclic olefin polymer vessels and vessel coating methods |
US9903782B2 (en) | 2012-11-16 | 2018-02-27 | Sio2 Medical Products, Inc. | Method and apparatus for detecting rapid barrier coating integrity characteristics |
US9937099B2 (en) | 2013-03-11 | 2018-04-10 | Sio2 Medical Products, Inc. | Trilayer coated pharmaceutical packaging with low oxygen transmission rate |
US10201660B2 (en) | 2012-11-30 | 2019-02-12 | Sio2 Medical Products, Inc. | Controlling the uniformity of PECVD deposition on medical syringes, cartridges, and the like |
US10369292B2 (en) | 2016-01-15 | 2019-08-06 | W. L. Gore & Associates, Inc. | Syringe plunger assemblies |
DE112010004275B4 (de) | 2009-10-23 | 2019-08-14 | Flextronics Ap, Llc | Verfahren und Vorrichtung zum Formpressen von thermoplastischen Materialien mit hoher Geschwindigkeit und niedrigem Pressdruck |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9597458B2 (en) * | 2009-10-29 | 2017-03-21 | W. L. Gore & Associates, Inc. | Fluoropolymer barrier materials for containers |
US10471212B2 (en) | 2009-10-29 | 2019-11-12 | W. L. Gore & Associates, Inc. | Silicone free drug delivery devices |
WO2012007246A1 (en) * | 2010-07-13 | 2012-01-19 | Novo Nordisk A/S | A piston rod foot |
US11612697B2 (en) | 2010-10-29 | 2023-03-28 | W. L. Gore & Associates, Inc. | Non-fluoropolymer tie layer and fluoropolymer barrier layer |
WO2020203239A1 (ja) | 2019-03-29 | 2020-10-08 | テルモ株式会社 | プランジャーキット、シリンジキット及びプレフィルドシリンジ |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4159570A (en) * | 1977-10-31 | 1979-07-03 | Dentipressions Incorporated | Disposable mixing syringe |
US4613326A (en) * | 1985-07-12 | 1986-09-23 | Becton, Dickinson And Company | Two-component medication syringe assembly |
US5090962A (en) * | 1989-04-28 | 1992-02-25 | Flp Enterprises, Inc. | Non-reusable syringe |
US5665068A (en) * | 1991-06-26 | 1997-09-09 | Arte Corporation | Dual chamber prefillable syringe |
US6129712A (en) * | 1998-11-05 | 2000-10-10 | Daikyo Seiko, Ltd. | Plunger for syringe |
US20080195059A1 (en) * | 2007-02-14 | 2008-08-14 | Daikyo Seiko, Ltd. | Syringe barrel and syringe |
US20100145284A1 (en) * | 2007-04-26 | 2010-06-10 | Daikyo Seiko, Ltd. | Needle-equipped syringe barrel needle-equipped syringe, and mold and method for molding same |
US8002754B2 (en) * | 2007-11-19 | 2011-08-23 | Daikyo Seiko, Ltd. | Plunger rod and syringe |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2914826B2 (ja) | 1991-07-22 | 1999-07-05 | 株式会社大協精工 | 衛生品用容器 |
JPH09308689A (ja) * | 1996-05-21 | 1997-12-02 | Nihon Medi Physics Co Ltd | 突起を有するプランジャーおよび注射器 |
JP4026871B2 (ja) | 1996-05-24 | 2007-12-26 | 株式会社大協精工 | 2室を結合した注射器 |
JP2892617B2 (ja) * | 1996-06-18 | 1999-05-17 | 株式会社大協精工 | 注射器用滑栓 |
JP2003190285A (ja) * | 2001-12-28 | 2003-07-08 | Daikyo Seiko Ltd | 注射器用ピストン |
JP2006519070A (ja) * | 2003-02-27 | 2006-08-24 | バクスター・インターナショナル・インコーポレイテッド | 注射器のためのピストンアセンブリ |
JP2005282591A (ja) * | 2004-03-26 | 2005-10-13 | Nitto Seiko Co Ltd | ボス部材とねじとの組合せ固定構造 |
JP2006181027A (ja) * | 2004-12-27 | 2006-07-13 | Daikyo Seiko Ltd | 注射器用ピストン |
-
2008
- 2008-06-27 JP JP2009523589A patent/JPWO2009011214A1/ja active Pending
- 2008-06-27 EP EP08790714.3A patent/EP2174681A4/en not_active Withdrawn
- 2008-06-27 WO PCT/JP2008/061749 patent/WO2009011214A1/ja active Application Filing
- 2008-06-27 US US12/668,812 patent/US20100185157A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4159570A (en) * | 1977-10-31 | 1979-07-03 | Dentipressions Incorporated | Disposable mixing syringe |
US4613326A (en) * | 1985-07-12 | 1986-09-23 | Becton, Dickinson And Company | Two-component medication syringe assembly |
US5090962A (en) * | 1989-04-28 | 1992-02-25 | Flp Enterprises, Inc. | Non-reusable syringe |
US5665068A (en) * | 1991-06-26 | 1997-09-09 | Arte Corporation | Dual chamber prefillable syringe |
US6129712A (en) * | 1998-11-05 | 2000-10-10 | Daikyo Seiko, Ltd. | Plunger for syringe |
US20080195059A1 (en) * | 2007-02-14 | 2008-08-14 | Daikyo Seiko, Ltd. | Syringe barrel and syringe |
US20100145284A1 (en) * | 2007-04-26 | 2010-06-10 | Daikyo Seiko, Ltd. | Needle-equipped syringe barrel needle-equipped syringe, and mold and method for molding same |
US8002754B2 (en) * | 2007-11-19 | 2011-08-23 | Daikyo Seiko, Ltd. | Plunger rod and syringe |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9572526B2 (en) | 2009-05-13 | 2017-02-21 | Sio2 Medical Products, Inc. | Apparatus and method for transporting a vessel to and from a PECVD processing station |
US9458536B2 (en) | 2009-07-02 | 2016-10-04 | Sio2 Medical Products, Inc. | PECVD coating methods for capped syringes, cartridges and other articles |
DE112010004275B4 (de) | 2009-10-23 | 2019-08-14 | Flextronics Ap, Llc | Verfahren und Vorrichtung zum Formpressen von thermoplastischen Materialien mit hoher Geschwindigkeit und niedrigem Pressdruck |
US9878101B2 (en) | 2010-11-12 | 2018-01-30 | Sio2 Medical Products, Inc. | Cyclic olefin polymer vessels and vessel coating methods |
US9272095B2 (en) | 2011-04-01 | 2016-03-01 | Sio2 Medical Products, Inc. | Vessels, contact surfaces, and coating and inspection apparatus and methods |
USD668760S1 (en) * | 2011-06-17 | 2012-10-09 | Daikyo Seiko, Ltd. | Syringe barrel |
US9664626B2 (en) | 2012-11-01 | 2017-05-30 | Sio2 Medical Products, Inc. | Coating inspection method |
US9903782B2 (en) | 2012-11-16 | 2018-02-27 | Sio2 Medical Products, Inc. | Method and apparatus for detecting rapid barrier coating integrity characteristics |
US9764093B2 (en) | 2012-11-30 | 2017-09-19 | Sio2 Medical Products, Inc. | Controlling the uniformity of PECVD deposition |
US10201660B2 (en) | 2012-11-30 | 2019-02-12 | Sio2 Medical Products, Inc. | Controlling the uniformity of PECVD deposition on medical syringes, cartridges, and the like |
US9662450B2 (en) | 2013-03-01 | 2017-05-30 | Sio2 Medical Products, Inc. | Plasma or CVD pre-treatment for lubricated pharmaceutical package, coating process and apparatus |
US9937099B2 (en) | 2013-03-11 | 2018-04-10 | Sio2 Medical Products, Inc. | Trilayer coated pharmaceutical packaging with low oxygen transmission rate |
US9554968B2 (en) | 2013-03-11 | 2017-01-31 | Sio2 Medical Products, Inc. | Trilayer coated pharmaceutical packaging |
US9863042B2 (en) | 2013-03-15 | 2018-01-09 | Sio2 Medical Products, Inc. | PECVD lubricity vessel coating, coating process and apparatus providing different power levels in two phases |
US10369292B2 (en) | 2016-01-15 | 2019-08-06 | W. L. Gore & Associates, Inc. | Syringe plunger assemblies |
Also Published As
Publication number | Publication date |
---|---|
JPWO2009011214A1 (ja) | 2010-09-16 |
WO2009011214A1 (ja) | 2009-01-22 |
EP2174681A4 (en) | 2013-05-01 |
EP2174681A1 (en) | 2010-04-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DAIKYO SEIKO, LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KAWAMURA, HIDEAKI;TOGASHI, HIROSHI;REEL/FRAME:023767/0319 Effective date: 20091204 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |